<!doctype html>
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="/shared-storage/resources/util.js"></script>
<script src="/fenced-frame/resources/utils.js"></script>

<body>
<script>
'use strict';
const PREV_ENTRY_LIMIT = 10000;

promise_test(async () => {
  const ancestor_key = token();
  let url0 = generateURL("/shared-storage/resources/frame0.html",
                         [ancestor_key]);
  let url1 = generateURL("/shared-storage/resources/frame1.html",
                         [ancestor_key]);
  let url2 = generateURL("/shared-storage/resources/frame2.html",
                         [ancestor_key]);

  const numEntriesToAppend = PREV_ENTRY_LIMIT + 1;

  // Create an array of promises.
  const append_promises = [];
  for (let i = 0; i < numEntriesToAppend; i++) {
    append_promises.push(sharedStorage.append(i.toString(), 'x'));
  }

  // Wait for all promises to resolve in parallel.
  await Promise.all(append_promises);

  await addModuleOnce("/shared-storage/resources/verify-length-module.js");
  let select_url_result = await sharedStorage.selectURL(
      "verify-length", [{url: url0}, {url: url1}, {url: url2}],
      {data: {'expectedLength': numEntriesToAppend},
      resolveToConfig: true, keepAlive: true});
  assert_true(validateSelectURLResult(select_url_result, true));
  attachFencedFrame(select_url_result, 'opaque-ads');

  // frame1_loaded implies that the legnth is as expected and so the calls to
  // append() were all successful.
  assert_equals(await nextValueFromServer(ancestor_key), "frame1_loaded");

  // Clean up.
  await sharedStorage.clear();
}, 'sharedStorage.append() is not constrained by the former entry limit of '
   + PREV_ENTRY_LIMIT.toString());

</script>
</body>
